Running The Vehicle While Parked; Automatic Transmission - GMC 2014 Acadia Owner's Manual

9-22 Driving and Operating
Warning (Continued)
There are holes or openings
in the vehicle body from
damage or aftermarket
modifications that are not
completely sealed.
If unusual fumes are detected or
if it is suspected that exhaust is
coming into the vehicle:
Drive it only with the windows
completely down.
Have the vehicle repaired
immediately.
Never park the vehicle with the
engine running in an enclosed
area such as a garage or a
building that has no fresh air
ventilation.
Running the Vehicle
While Parked
It is better not to park with the
engine running.
If the vehicle is left with the engine
running, follow the proper steps to
be sure the vehicle will not move.
See
and
If parking on a hill and pulling a
trailer, see
Automatic
Transmission
.
.
P (Park): This position locks the
front wheels. It is the best position
to use when starting the engine
because the vehicle cannot move
easily.